Steam turbine start-up condensate recovery device

Abstract

This utility model discloses a steam turbine start-up condensate recovery device, relating to the field of steam turbines. The device includes a saturated steam pipeline network and a steam turbine unit. A steam-water separator, an inlet tee pipe, and an outlet connecting pipe are installed between the saturated steam pipeline network and the steam turbine unit. One end of the inlet tee pipe is fixedly connected to a condensate tee pipe, and the other end is fixedly connected to the steam-water separator. One end of the outlet connecting pipe is fixedly connected to the steam-water separator, and the other end is fixedly connected to the saturated steam pipeline network. The outlet connecting pipe is used to guide superheated steam from the steam turbine unit into the saturated steam pipeline network for reuse. This device, by adding a pipeline and a stop valve before the existing condensate pipe to the drain valve, introduces steam energy into the saturated steam pipeline network, enabling the recovery of steam energy during turbine start-up, achieving energy conservation and emission reduction, avoiding environmental noise pollution and white pollution, and increasing the steam output of the saturated steam turbine unit.

Description

Technical Field

[0001] This utility model relates to the technical field of steam turbines, specifically to a steam turbine start-up condensate recovery device. Background Technology

[0002] A steam turbine is a rotary thermal energy conversion machine that uses steam as its power source. Its working principle involves using high-temperature, high-pressure steam generated by a boiler to drive turbine blades, converting the steam's thermal energy into mechanical energy, which in turn drives a generator to produce electricity or directly powers industrial equipment. As a core power source in modern industry, steam turbines are widely used in thermal power generation, ship propulsion, petrochemicals, and other fields. Their high efficiency makes them a crucial hub for energy conversion.

[0003] During turbine start-up and shutdown, a warm-up operation is required to ensure the safety of the steam pipeline and the unit, thereby raising the temperature of the steam entering the turbine to the specified value. Currently, superheated steam pipeline condensate is directly discharged into a ditch, resulting in significant steam heat and water losses. Furthermore, the large amount of steam emitted also causes noise and steam pollution to the surrounding environment. To address these issues, this invention provides a turbine start-up condensate recovery device. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a turbine start-up condensate recovery device. This solves the problem of needing to perform a warm-up operation during turbine start-up and shutdown to ensure the safety of steam pipelines and the unit, thereby increasing the temperature of the steam entering the turbine to the specified value. Currently, superheated steam pipeline condensate is directly discharged into a ditch, resulting in significant steam heat and water losses. Furthermore, the large amount of steam emitted also causes noise and steam pollution problems in the surrounding environment.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a turbine start-up condensate recovery device, comprising a saturated steam pipeline network and a turbine unit, wherein a steam-water separator, an inlet tee pipe, and an outlet connecting pipe are provided between the saturated steam pipeline network and the turbine unit. The steam-water separator is used to introduce superheated steam. One end of the inlet tee pipe is fixedly connected to a condensate tee pipe, and the other end of the inlet tee pipe is fixedly connected to the steam-water separator. The inlet tee pipe is used to guide superheated steam from the turbine unit into the steam-water separator. One end of the outlet connecting pipe is fixedly connected to the steam-water separator, and the other end of the outlet connecting pipe is fixedly connected to the saturated steam pipeline network. The outlet connecting pipe is used to guide superheated steam from the turbine unit into the saturated steam pipeline network for reuse.

[0006] Preferably, the vapor-water separator includes a tank body, a diversion ring, and a bottom water storage tank. The tank body is used to store and separate water vapor. The diversion ring is fixedly connected to the upper end of the tank body and is used to block condensate. The bottom water storage tank is installed at the bottom of the tank body and is used to temporarily store condensate.

[0007] Preferably, a drain tee is further included between the saturated steam pipeline and the turbine unit. One end of the drain tee is fixedly connected to the output end of the turbine unit, and the other end of the drain tee is fixedly connected to the inlet tee. The drain tee is used to transport the superheated steam in the turbine unit to the steam-water separator.

[0008] Preferably, the gas-water separator further includes an inlet pipe end, a top vent valve, and an outlet pipe end. The inlet pipe end is fixedly connected to one side of the tank body, and the inlet tee pipe is fixedly connected to the inlet pipe end. An inner tube is fixedly connected to the inner end of the inlet pipe end, and the inner tube is fixedly connected to the inside of the tank body. The inner tube is used to prevent condensate backflow. The top vent valve is used for emergency venting and is fixedly connected to the top of the tank body. The outlet pipe end is fixedly connected to the other side of the tank body, and the outlet connection pipe is fixedly connected to the outlet pipe end.

[0009] Preferably, a diverting oblique blade is fixedly connected inside the diverting ring, the diverting oblique blade is used to separate steam and condensate, an oblique groove is opened inside the water storage tank, the oblique groove is used to collect condensate, and a fixed bottom block is fixedly connected to the bottom end of the water storage tank, the fixed bottom block is fixedly connected to the bottom end of the tank body.

[0010] Preferably, a shut-off valve is also provided between the saturated steam pipeline and the turbine unit, the shut-off valve being used to open and close the outlet connection pipe.

[0011] This utility model discloses a steam turbine start-up condensate recovery device, which has the following beneficial effects: The steam turbine start-up condensate recovery device adds a pipeline and a stop valve to the existing condensate pipeline before the trench valve, and introduces a saturated steam pipeline network, so that steam energy can be recovered when the steam turbine starts up, thereby achieving the purpose of energy saving and emission reduction, avoiding environmental noise pollution and white pollution, and increasing the steam output of the saturated steam unit. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1This is a schematic diagram of the overall front structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the circuit structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the overall structure of the gas-water separator of this utility model;

[0016] Figure 4 This is a schematic cross-sectional view of the steam-water separator of this utility model.

[0017] In the diagram: 1. Drainage tee; 2. Shut-off valve; 3. Inlet tee; 4. Steam-water separator; 41. Tank body; 42. Inlet pipe end; 421. Inner pipe; 43. Top outlet valve; 44. Outlet pipe end; 45. Diverter ring; 451. Diverter blades; 46. Water storage tank bottom; 461. Inclined groove; 462. Fixed bottom block; 5. Outlet connection pipe; 6. Saturated steam network; 7. Steam turbine unit. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] This application provides a turbine start-up condensate recovery device, which solves the problem that during turbine start-up and shutdown, a warm-up operation is required to ensure the safety of steam pipelines and the unit, thereby increasing the temperature of the steam entering the turbine to a specified value. Existing methods directly discharge superheated steam pipeline condensate into underground drains, resulting in significant steam heat and water losses. Furthermore, the large amount of steam emitted also causes noise and steam pollution in the surrounding environment.

[0020] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0021] This utility model discloses a steam turbine start-up condensate recovery device. Example

[0022] According to the appendix Figure 1-4As shown, the system includes a saturated steam pipeline network 6 and a steam turbine unit 7. A steam-water separator 4, an inlet tee pipe 3, and an outlet connecting pipe 5 are installed between the saturated steam pipeline network 6 and the steam turbine unit 7. The steam-water separator 4 is used to introduce superheated steam. One end of the inlet tee pipe 3 is fixedly connected to a drain tee pipe 1, and the other end of the inlet tee pipe 3 is fixedly connected to the steam-water separator 4. The inlet tee pipe 3 is used to introduce superheated steam from the steam turbine unit 7 into the steam-water separator 4. One end of the outlet connecting pipe 5 is fixedly connected to the steam-water separator. 4. The other end of the outlet connection pipe 5 is fixedly connected to the saturated steam pipeline network 6. The outlet connection pipe 5 is used to introduce the superheated steam in the turbine unit 7 into the saturated steam pipeline network 6 for reuse. When the turbine unit 7 is warmed up and the discharge steam pressure is greater than the saturated steam main pipe pressure, the shut-off valve 2 is opened to recover steam. The steam enters the inlet tee pipe 3 through the drain tee pipe 1, and then enters the steam-water separator 4 to separate the condensate. Then, it enters the saturated steam pipeline network 6 from the outlet connection pipe 5 to complete the recovery.

[0023] A drain tee 1 is also included between the saturated steam pipeline network 6 and the turbine unit 7. One end of the drain tee 1 is fixedly connected to the output end of the turbine unit 7, and the other end of the drain tee 1 is fixedly connected to the inlet tee 3. The drain tee 1 is used to transport the superheated steam in the turbine unit 7 to the steam-water separator 4. A shut-off valve 2 is also provided between the saturated steam pipeline network 6 and the turbine unit 7. The shut-off valve 2 is used to open and close the outlet connection pipe. Example

[0024] Based on Example 1, according to Appendix Figure 1-4 As shown, the steam-water separator 4 includes a tank body 41, a flow divider ring 45, and a bottom water storage tank 46. The tank body 41 is used to store and separate steam and water vapor. The flow divider ring 45 is fixedly connected to the upper end of the tank body 41 and is used to block condensate. A flow divider blade 451 is fixedly connected inside the flow divider ring 45 and is used to separate steam and condensate. The bottom water storage tank 46 is installed at the bottom end of the tank body 41 and is used to temporarily store condensate. An inclined groove 4 is formed inside the bottom water storage tank 46. 61. The inclined channel 461 is used to collect condensate. The bottom of the water storage tank 46 is fixedly connected to a fixed bottom block 462. The fixed bottom block 462 is fixedly connected to the bottom of the tank body 41. By setting the diversion inclined blade 451, the upward steam flow is output to the tank body 41 in an orderly manner. The condensate carried by the steam adheres to the diversion inclined blade 451 or falls into the water storage tank 46 during the steam rise, preventing the steam carrying condensate from hitting the saturated steam pipeline 6 and causing water hammer phenomenon that damages the pipe wall.

[0025] The gas-water separator 4 also includes an inlet pipe end 42, a top vent valve 43, and an outlet pipe end 44. The inlet pipe end 42 is fixedly connected to one side of the tank body 41. The inlet tee pipe 3 is fixedly connected to the inlet pipe end 42. An inner tube 421 is fixedly connected to the inner end of the inlet pipe end 42. The inner tube 421 is fixedly connected to the inside of the tank body 41 and is used to prevent condensate backflow. The top vent valve 43 is used for emergency venting and is fixedly connected to the top of the tank body 41. The outlet pipe end 44 is fixedly connected to the other side of the tank body 41, and the outlet connecting pipe 5 is fixedly connected to the outlet pipe end 44.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A steam turbine start-up drain recovery apparatus comprising a saturated steam header (6) and a steam turbine unit (7), characterized in that, A connection is provided between the saturated steam pipeline (6) and the steam turbine unit (7): Steam-water separator (4), which is used to introduce superheated steam; The inlet tee pipe (3) is fixedly connected at one end to the drain tee pipe (1) and at the other end to the steam-water separator (4). The inlet tee pipe (3) is used to introduce superheated steam from the turbine unit (7) into the steam-water separator (4). The outlet connection pipe (5) is fixedly connected at one end to the steam-water separator (4) and at the other end to the saturated steam pipeline (6). The outlet connection pipe (5) is used to introduce the superheated steam in the turbine unit (7) into the saturated steam pipeline (6) for reuse.

2. The steam turbine start-up drain recovery device of claim 1, wherein: The steam-water separator (4) includes: Tank (41), the tank (41) being used for storing and separating water vapor; Diverting ring (45), which is fixedly connected to the upper end of tank (41), is used to block condensate; A water storage tank (46) is installed at the bottom of the tank body (41) and is used to temporarily store condensate.

3. The steam turbine start-up drain recovery device of claim 1, wherein: The saturated steam pipeline (6) and the turbine unit (7) are further connected by a drain tee (1). One end of the drain tee (1) is fixedly connected to the output end of the turbine unit (7), and the other end of the drain tee (1) is fixedly connected to the inlet tee (3). The drain tee (1) is used to transport the superheated steam in the turbine unit (7) to the steam-water separator (4).

4. The steam turbine start-up drain recovery device of claim 1, wherein: The steam-water separator (4) also includes: The input pipe end (42) is fixedly connected to one side of the tank body (41), the inlet tee pipe (3) is fixedly connected to the input pipe end (42), and the inner end of the input pipe end (42) is fixedly connected to the inner tube (421). The inner tube (421) is fixedly connected to the inside of the tank body (41). The inner tube (421) is used to prevent condensate backflow. Top vent valve (43), the top vent valve (43) is used for emergency venting, the top vent valve (43) is fixedly connected to the top of the tank body (41); The output pipe end (44) is fixedly connected to the other side of the tank body (41), and the tank outlet connecting pipe (5) is fixedly connected to the output pipe end (44).

5. The steam turbine start-up drain recovery device of claim 2, wherein: The flow divider ring (45) is fixedly connected with a flow divider blade (451), which is used to separate steam and condensate. The water storage tank (46) is provided with a groove (461), which is used to collect condensate. The bottom of the water storage tank (46) is fixedly connected with a fixed bottom block (462), which is fixedly connected to the bottom of the tank body (41).

6. The turbine start-up condensate recovery device according to claim 1, characterized in that: A shut-off valve (2) is also provided between the saturated steam pipeline (6) and the turbine unit (7). The shut-off valve (2) is used to open and close the outlet connection pipe (5).

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